/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:20:35,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:20:35,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:20:35,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:20:35,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:20:35,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:20:35,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:20:35,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-12 17:20:35,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:20:35,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:20:35,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:20:35,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:20:35,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:20:35,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:20:35,598 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:20:35,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:20:35,598 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:20:35,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:20:35,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:20:35,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:20:35,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:20:35,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:20:35,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:20:35,600 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:20:35,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:20:35,600 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:20:35,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:20:35,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:20:35,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:20:35,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:20:35,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:20:35,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:20:35,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:20:35,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:20:35,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:20:35,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:20:35,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:20:35,602 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:20:35,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:20:35,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:20:35,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:20:35,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:20:35,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:20:35,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:20:35,967 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:20:35,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2021-06-12 17:20:36,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d070aaf/575382f971424986a939cd13a4a54df1/FLAGee9686f01 [2021-06-12 17:20:36,563 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:20:36,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2021-06-12 17:20:36,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d070aaf/575382f971424986a939cd13a4a54df1/FLAGee9686f01 [2021-06-12 17:20:36,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d070aaf/575382f971424986a939cd13a4a54df1 [2021-06-12 17:20:36,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:20:36,901 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:20:36,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:20:36,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:20:36,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:20:36,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:20:36" (1/1) ... [2021-06-12 17:20:36,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cde9b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:36, skipping insertion in model container [2021-06-12 17:20:36,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:20:36" (1/1) ... [2021-06-12 17:20:36,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:20:36,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:20:37,093 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i[950,963] [2021-06-12 17:20:37,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:20:37,254 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:20:37,264 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i[950,963] [2021-06-12 17:20:37,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:20:37,375 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:20:37,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37 WrapperNode [2021-06-12 17:20:37,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:20:37,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:20:37,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:20:37,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:20:37,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (1/1) ... [2021-06-12 17:20:37,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (1/1) ... [2021-06-12 17:20:37,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:20:37,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:20:37,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:20:37,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:20:37,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (1/1) ... [2021-06-12 17:20:37,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (1/1) ... [2021-06-12 17:20:37,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (1/1) ... [2021-06-12 17:20:37,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (1/1) ... [2021-06-12 17:20:37,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (1/1) ... [2021-06-12 17:20:37,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (1/1) ... [2021-06-12 17:20:37,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (1/1) ... [2021-06-12 17:20:37,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:20:37,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:20:37,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:20:37,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:20:37,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:20:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:20:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:20:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:20:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:20:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:20:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:20:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:20:37,545 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:20:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:20:37,545 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:20:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:20:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:20:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:20:37,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:20:37,546 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:20:37,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:20:37,995 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:20:37,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:20:37 BoogieIcfgContainer [2021-06-12 17:20:37,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:20:37,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:20:38,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:20:38,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:20:38,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:20:36" (1/3) ... [2021-06-12 17:20:38,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9ea72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:20:38, skipping insertion in model container [2021-06-12 17:20:38,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:37" (2/3) ... [2021-06-12 17:20:38,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9ea72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:20:38, skipping insertion in model container [2021-06-12 17:20:38,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:20:37" (3/3) ... [2021-06-12 17:20:38,006 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2021-06-12 17:20:38,012 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:20:38,013 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:20:38,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:20:38,014 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:20:38,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,056 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,056 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,057 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,057 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,057 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,057 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,058 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,058 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,058 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,058 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,059 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,059 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,059 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,059 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,061 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,062 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,070 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,070 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:38,074 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:20:38,092 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:20:38,117 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:20:38,117 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:20:38,117 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:20:38,117 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:20:38,118 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:20:38,118 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:20:38,118 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:20:38,118 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:20:38,131 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-12 17:20:38,652 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:38,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-12 17:20:38,762 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:38,763 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:38,763 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:38,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:38,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-06-12 17:20:38,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:38,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498852510] [2021-06-12 17:20:38,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:39,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:39,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498852510] [2021-06-12 17:20:39,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498852510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:39,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:39,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:20:39,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274282331] [2021-06-12 17:20:39,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:20:39,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:39,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:20:39,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:20:39,230 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:39,552 INFO L93 Difference]: Finished difference Result 12223 states and 42407 transitions. [2021-06-12 17:20:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:20:39,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-12 17:20:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:39,601 INFO L225 Difference]: With dead ends: 12223 [2021-06-12 17:20:39,602 INFO L226 Difference]: Without dead ends: 4628 [2021-06-12 17:20:39,603 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 136.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:20:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2021-06-12 17:20:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4628. [2021-06-12 17:20:39,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4628 states, 4627 states have (on average 3.38599524529933) internal successors, (15667), 4627 states have internal predecessors, (15667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 15667 transitions. [2021-06-12 17:20:39,871 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 15667 transitions. Word has length 49 [2021-06-12 17:20:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:39,875 INFO L482 AbstractCegarLoop]: Abstraction has 4628 states and 15667 transitions. [2021-06-12 17:20:39,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:39,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 15667 transitions. [2021-06-12 17:20:39,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-12 17:20:39,895 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:39,896 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:39,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:20:39,897 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:39,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:39,899 INFO L82 PathProgramCache]: Analyzing trace with hash -303430371, now seen corresponding path program 1 times [2021-06-12 17:20:39,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:39,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939772617] [2021-06-12 17:20:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:40,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:40,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939772617] [2021-06-12 17:20:40,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939772617] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:40,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:40,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:20:40,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396558407] [2021-06-12 17:20:40,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:20:40,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:40,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:20:40,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:20:40,116 INFO L87 Difference]: Start difference. First operand 4628 states and 15667 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:40,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:40,311 INFO L93 Difference]: Finished difference Result 5488 states and 18430 transitions. [2021-06-12 17:20:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:20:40,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-12 17:20:40,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:40,338 INFO L225 Difference]: With dead ends: 5488 [2021-06-12 17:20:40,339 INFO L226 Difference]: Without dead ends: 4508 [2021-06-12 17:20:40,340 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 107.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:20:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2021-06-12 17:20:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 4508. [2021-06-12 17:20:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 4507 states have (on average 3.374972265364988) internal successors, (15211), 4507 states have internal predecessors, (15211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:40,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 15211 transitions. [2021-06-12 17:20:40,546 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 15211 transitions. Word has length 51 [2021-06-12 17:20:40,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:40,546 INFO L482 AbstractCegarLoop]: Abstraction has 4508 states and 15211 transitions. [2021-06-12 17:20:40,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 15211 transitions. [2021-06-12 17:20:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-12 17:20:40,557 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:40,557 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:40,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:20:40,557 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:40,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1290194594, now seen corresponding path program 1 times [2021-06-12 17:20:40,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:40,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251665688] [2021-06-12 17:20:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:40,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:40,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:40,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251665688] [2021-06-12 17:20:40,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251665688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:40,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:40,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:20:40,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589332240] [2021-06-12 17:20:40,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:20:40,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:40,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:20:40,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:20:40,641 INFO L87 Difference]: Start difference. First operand 4508 states and 15211 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:40,765 INFO L93 Difference]: Finished difference Result 4898 states and 16363 transitions. [2021-06-12 17:20:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:20:40,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-12 17:20:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:40,786 INFO L225 Difference]: With dead ends: 4898 [2021-06-12 17:20:40,787 INFO L226 Difference]: Without dead ends: 3998 [2021-06-12 17:20:40,787 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:20:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-06-12 17:20:40,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3998. [2021-06-12 17:20:40,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 3997 states have (on average 3.3432574430823117) internal successors, (13363), 3997 states have internal predecessors, (13363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 13363 transitions. [2021-06-12 17:20:40,930 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 13363 transitions. Word has length 53 [2021-06-12 17:20:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:40,932 INFO L482 AbstractCegarLoop]: Abstraction has 3998 states and 13363 transitions. [2021-06-12 17:20:40,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 13363 transitions. [2021-06-12 17:20:40,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 17:20:40,942 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:40,942 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:40,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:20:40,942 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:40,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1811033892, now seen corresponding path program 1 times [2021-06-12 17:20:40,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:40,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532237003] [2021-06-12 17:20:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:41,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:41,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532237003] [2021-06-12 17:20:41,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532237003] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:41,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:41,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:20:41,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720187570] [2021-06-12 17:20:41,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:20:41,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:41,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:20:41,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:20:41,081 INFO L87 Difference]: Start difference. First operand 3998 states and 13363 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:41,367 INFO L93 Difference]: Finished difference Result 8913 states and 29300 transitions. [2021-06-12 17:20:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 17:20:41,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-12 17:20:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:41,398 INFO L225 Difference]: With dead ends: 8913 [2021-06-12 17:20:41,398 INFO L226 Difference]: Without dead ends: 3868 [2021-06-12 17:20:41,402 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 163.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:20:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-06-12 17:20:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 2928. [2021-06-12 17:20:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 3.169115134950461) internal successors, (9276), 2927 states have internal predecessors, (9276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 9276 transitions. [2021-06-12 17:20:41,486 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 9276 transitions. Word has length 54 [2021-06-12 17:20:41,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:41,487 INFO L482 AbstractCegarLoop]: Abstraction has 2928 states and 9276 transitions. [2021-06-12 17:20:41,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 9276 transitions. [2021-06-12 17:20:41,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-12 17:20:41,495 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:41,495 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:41,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:20:41,496 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:41,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash 690569953, now seen corresponding path program 1 times [2021-06-12 17:20:41,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:41,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329385959] [2021-06-12 17:20:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:41,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:41,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329385959] [2021-06-12 17:20:41,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329385959] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:41,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:41,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:20:41,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827607113] [2021-06-12 17:20:41,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:20:41,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:41,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:20:41,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:20:41,617 INFO L87 Difference]: Start difference. First operand 2928 states and 9276 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:41,790 INFO L93 Difference]: Finished difference Result 3336 states and 10430 transitions. [2021-06-12 17:20:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:20:41,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-12 17:20:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:41,796 INFO L225 Difference]: With dead ends: 3336 [2021-06-12 17:20:41,796 INFO L226 Difference]: Without dead ends: 1576 [2021-06-12 17:20:41,797 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-12 17:20:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-06-12 17:20:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1576. [2021-06-12 17:20:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 2.9638095238095237) internal successors, (4668), 1575 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 4668 transitions. [2021-06-12 17:20:41,837 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 4668 transitions. Word has length 56 [2021-06-12 17:20:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:41,837 INFO L482 AbstractCegarLoop]: Abstraction has 1576 states and 4668 transitions. [2021-06-12 17:20:41,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 4668 transitions. [2021-06-12 17:20:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:20:41,841 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:41,842 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:41,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:20:41,842 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:41,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:41,842 INFO L82 PathProgramCache]: Analyzing trace with hash -708582085, now seen corresponding path program 1 times [2021-06-12 17:20:41,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:41,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501624066] [2021-06-12 17:20:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:41,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:41,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501624066] [2021-06-12 17:20:41,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501624066] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:41,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:41,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:20:41,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347188152] [2021-06-12 17:20:41,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:20:41,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:41,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:20:41,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:20:41,959 INFO L87 Difference]: Start difference. First operand 1576 states and 4668 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:42,077 INFO L93 Difference]: Finished difference Result 1797 states and 5273 transitions. [2021-06-12 17:20:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:20:42,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-12 17:20:42,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:42,081 INFO L225 Difference]: With dead ends: 1797 [2021-06-12 17:20:42,081 INFO L226 Difference]: Without dead ends: 1421 [2021-06-12 17:20:42,081 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 106.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:20:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2021-06-12 17:20:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1421. [2021-06-12 17:20:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 2.9140845070422534) internal successors, (4138), 1420 states have internal predecessors, (4138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4138 transitions. [2021-06-12 17:20:42,116 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4138 transitions. Word has length 57 [2021-06-12 17:20:42,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:42,117 INFO L482 AbstractCegarLoop]: Abstraction has 1421 states and 4138 transitions. [2021-06-12 17:20:42,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4138 transitions. [2021-06-12 17:20:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-12 17:20:42,120 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:42,121 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:42,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:20:42,121 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:42,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:42,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1038431362, now seen corresponding path program 1 times [2021-06-12 17:20:42,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:42,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486254429] [2021-06-12 17:20:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:42,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:42,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486254429] [2021-06-12 17:20:42,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486254429] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:42,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:42,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:20:42,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077127781] [2021-06-12 17:20:42,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:20:42,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:42,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:20:42,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:20:42,204 INFO L87 Difference]: Start difference. First operand 1421 states and 4138 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:42,326 INFO L93 Difference]: Finished difference Result 1307 states and 3699 transitions. [2021-06-12 17:20:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:20:42,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-12 17:20:42,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:42,329 INFO L225 Difference]: With dead ends: 1307 [2021-06-12 17:20:42,329 INFO L226 Difference]: Without dead ends: 1031 [2021-06-12 17:20:42,330 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:20:42,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-06-12 17:20:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2021-06-12 17:20:42,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 2.774757281553398) internal successors, (2858), 1030 states have internal predecessors, (2858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 2858 transitions. [2021-06-12 17:20:42,354 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 2858 transitions. Word has length 58 [2021-06-12 17:20:42,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:42,354 INFO L482 AbstractCegarLoop]: Abstraction has 1031 states and 2858 transitions. [2021-06-12 17:20:42,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 2858 transitions. [2021-06-12 17:20:42,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-12 17:20:42,357 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:42,357 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:42,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 17:20:42,357 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:42,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:42,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2126121667, now seen corresponding path program 1 times [2021-06-12 17:20:42,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:42,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977806232] [2021-06-12 17:20:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:42,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:42,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977806232] [2021-06-12 17:20:42,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977806232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:42,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:42,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:20:42,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112897690] [2021-06-12 17:20:42,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:20:42,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:42,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:20:42,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:20:42,488 INFO L87 Difference]: Start difference. First operand 1031 states and 2858 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:42,577 INFO L93 Difference]: Finished difference Result 734 states and 1967 transitions. [2021-06-12 17:20:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 17:20:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-12 17:20:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:42,577 INFO L225 Difference]: With dead ends: 734 [2021-06-12 17:20:42,578 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:20:42,578 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:20:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:20:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:20:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:20:42,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-06-12 17:20:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:42,579 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:20:42,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:20:42,579 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:20:42,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 17:20:42,581 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:20:42,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:20:42 BasicIcfg [2021-06-12 17:20:42,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:20:42,584 INFO L168 Benchmark]: Toolchain (without parser) took 5682.48 ms. Allocated memory was 187.7 MB in the beginning and 687.9 MB in the end (delta: 500.2 MB). Free memory was 151.1 MB in the beginning and 563.9 MB in the end (delta: -412.8 MB). Peak memory consumption was 87.7 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:42,584 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 187.7 MB. Free memory is still 169.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:20:42,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.00 ms. Allocated memory is still 187.7 MB. Free memory was 151.0 MB in the beginning and 149.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:42,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.27 ms. Allocated memory is still 187.7 MB. Free memory was 149.8 MB in the beginning and 147.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:42,588 INFO L168 Benchmark]: Boogie Preprocessor took 32.02 ms. Allocated memory is still 187.7 MB. Free memory was 147.7 MB in the beginning and 146.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:42,588 INFO L168 Benchmark]: RCFGBuilder took 537.67 ms. Allocated memory is still 187.7 MB. Free memory was 146.1 MB in the beginning and 122.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:42,590 INFO L168 Benchmark]: TraceAbstraction took 4583.78 ms. Allocated memory was 187.7 MB in the beginning and 687.9 MB in the end (delta: 500.2 MB). Free memory was 122.0 MB in the beginning and 563.9 MB in the end (delta: -442.0 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:42,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 187.7 MB. Free memory is still 169.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 474.00 ms. Allocated memory is still 187.7 MB. Free memory was 151.0 MB in the beginning and 149.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.27 ms. Allocated memory is still 187.7 MB. Free memory was 149.8 MB in the beginning and 147.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.02 ms. Allocated memory is still 187.7 MB. Free memory was 147.7 MB in the beginning and 146.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 537.67 ms. Allocated memory is still 187.7 MB. Free memory was 146.1 MB in the beginning and 122.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4583.78 ms. Allocated memory was 187.7 MB in the beginning and 687.9 MB in the end (delta: 500.2 MB). Free memory was 122.0 MB in the beginning and 563.9 MB in the end (delta: -442.0 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4465.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 163.6ms, AutomataDifference: 1613.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 534.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 808 SDtfs, 1176 SDslu, 2501 SDs, 0 SdLazy, 268 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 223.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 923.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 787.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 940 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.6ms SsaConstructionTime, 260.7ms SatisfiabilityAnalysisTime, 875.4ms InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 429 ConstructedInterpolants, 0 QuantifiedInterpolants, 1209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...